Graphhopper: Implement gtfs-realtime

[michaz]

It should be feature-complete, but can otherwise be _completely_ naive, like having a list of all current issues next to the real graph and looking at it at every node.

Then start optimizing from there.

[michaz]

Skipping stops is now working.
Next: Delays, including missing transfers.
With that, I would call it a viable prototype already.

[AAAstorga]

Hello @michaz! Are there any updates on this. We are looking to use graphhopper as our routing solution, but we would like to implement realtime-gtfs data.

Thanks!

[michaz]

Next: Delays, including missing transfers.

This works as of yesterday. On at least one dataset. ,-)

[AAAstorga]

Awesome! Do you have any documentation on how to use a real-time GTFS feed? Would love to implement it!

[michaz]

@AAAstorga Wow, thank's for your interest! :-) At the moment, I can only refer you to the trimet branch, which is the test instance I am developing here.

Totally alpha (do not take the performance seriously, the thing currently polls the real-time feed from the operator _per request_!), but perhaps a starting point if you're going to set up your own instance?

[michaz]

This is now feature-complete, up to lots of testing and verifying that all features work in both search directions and such.

Continue in individual issues.

[karussell]

Wow, congrats :+1: !

[AAAstorga]

This is awesome! Is there any documentation on how to use it?

Woo!